database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-11 10:01:57 +03:00
Code Activity

Make use of statistics on index expressions. There are still some

Browse Source 
corner cases that could stand improvement, but it does all the basic
stuff.  A byproduct is that the selectivity routines are no longer
constrained to working on simple Vars; we might in future be able to
improve the behavior for subexpressions that don't match indexes.
This commit is contained in:
Tom Lane
2004-02-17 00:52:53 +00:00
parent d372bba02d
commit a536ed53bc
5 changed files with 1108 additions and 1025 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/backend/optimizer/util/relnode.c
View File

@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/util/relnode.c,v 1.54 2003/12/08 18:19:58 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/util/relnode.c,v 1.55 2004/02/17 00:52:53 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -214,12 +214,8 @@ find_base_rel(Query *root, int relid)
* find_join_rel
* Returns relation entry corresponding to 'relids' (a set of RT indexes),
* or NULL if none exists. This is for join relations.
*
* Note: there is probably no good reason for this to be called from
* anywhere except build_join_rel, but keep it as a separate routine
* just in case.
*/
static RelOptInfo *
RelOptInfo *
find_join_rel(Query *root, Relids relids)
{
List *joinrels;